Why is it called out of band protocolltbrgta1 ftp uses port, Ask an Expert

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Why is it called out of band protocol?
A1) FTP uses port 20 and port 21; port 20 is used for data connection, whereas port 21 is used for control connection. FTP is known as out-of-band protocol, as it uses two separate ports of data communication and control communication.

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Computer Engineering, Engineering

Category:- Computer Engineering
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